With the fourth beta of iOS 26, Apple has again made changes to the Liquid Glass design that's available across the operating system,

Meanwhile, the third iOS 26 beta added more changes to Liquid Glass to make it more readable, new wallpapers and several other fixes. As such, we’d expect the first public beta to take all the recommendations and fixes from the developer beta. This also goes for the full public release, which could look very different.

In the past, Apple has tended to release its iOS public betas around the middle of July, so the mooted July 23 launch date is a little later than usual. Gurman ascribes this to the full-blown Liquid Glass redesign in iOS 26, saying “it makes sense that Apple would want to take a little extra time to get things right.”